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Recently several efficient schemes are proposed to provide security of e-medicine systems. Almost all of these schemes have tried to achieve the highest security level in transmission of patients’ medical information to medical institutions through a heterogeneous network like Internet. In this paper, we explain the insecurity of these schemes against(More)
A B S T R A C T Elliptic Curve Cryptosystems (ECC) have recently received significant attention by researchers due to their high performance such as low computational cost and small key size. In this paper a novel untraceable blind signature scheme is presented. Since the security of proposed method is based on difficulty of solving discrete logarithm over(More)
In recent years, the Elliptic Curve Cryptosystem (ECC) has attracted a great deal of attention due to its advantages. In this paper, a new ECC based scheme in a hierarchical mobile agent framework is presented. In the proposed scheme legality of agents is verified by hosts to avoid the masquerade attack. Analyzing the security criteria and performance(More)
The FPGA (re)configuration is a time-consuming process and a bottleneck in FPGA-based Run-Time Reconfigurable (RTR) systems. In this paper, we present a High Level Synthesis (HLS) method, based on the data path merging technique to amortize the hardware configuration time in RTR systems. It merges the Data Flow Graphs (DFGs) of two or more computational(More)
We propose QTRU, a probabilistic and multi-dimensional public key cryptosystem based on the NTRU public key cryptosystem using quaternion algebra. QTRU encrypts four data vectors in each encryption session and the only other major difference between NTRU and QTRU is that the underlying algebraic structure has been changed to a non-commutative algebraic(More)
Quantum Cellular Automata (QCA) is an emerging nanotechnology and one of the top six technologies of the future. CMOS technology has a lot of limitations while scaling into a nano-level. QCA technology is a perfect replacement of CMOS technology with no such limitations. In this paper we have proposed one 2:1 multiplexer circuit having lowest complexity and(More)